CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net loss	$ (35,607)	$ (34,498)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	13,815	12,857
Accretion of debt in interest expense	1,053	981
Current expected credit losses	784	482
Provision for obsolete inventory	352	1,363
Stock-based compensation	6,670	6,767
Adjustment to contingent consideration liability	(7,500)	0
Changes in operating assets and liabilities:
Accounts receivable	(3,690)	(11,360)
Inventories	10,798	(8,425)
Other current assets	(448)	1,596
Other assets	570	(2,521)
Accounts payable	3,086	5,305
Accrued salaries and benefits	(3,571)	(2,840)
Accrued expenses	(465)	(1,690)
Customer deposits and deferred service revenue	25	(1,043)
Customers payable	1,819	2,031
Other long-term liabilities	(486)	(594)
Net cash used in operating activities	(12,795)	(31,589)
Cash flows from investing activities:
Cash paid for acquisitions, net of cash acquired	0	(1,212)
Capital expenditures	(3,237)	(504)
Capitalization of software costs	(1,993)	(3,247)
Purchase of held to maturity investments	(935)	0
Net cash used in investing activities	(6,165)	(4,963)
Cash flows from financing activities:
Principal payments of long-term debt	0	(348)
Treasury stock acquired from employees upon vesting or forfeiture of restricted stock	(2,683)	(2,448)
Proceeds from exercise of stock options	202	1,018
Net cash used in financing activities	(2,481)	(1,778)
Effect of exchange rate changes on cash and cash equivalents	(2,906)	511
Net decrease in cash and cash equivalents and cash held on behalf of customers	(24,347)	(37,819)
Cash and cash equivalents and cash held on behalf of customers at beginning of period	77,533	188,419
Cash and cash equivalents and cash held on behalf of customers at end of period	53,186	150,600
Reconciliation of cash and cash equivalents and cash held on behalf of customers
Cash and cash equivalents	44,162	148,569
Cash held on behalf of customers	9,024	2,031
Total cash and cash equivalents and cash held on behalf of customers	53,186	150,600
Supplemental disclosures of cash flow information:
Interest	106	16
Income taxes	525	0
Capitalized software recorded in accounts payable	642	39
Capital expenditures in accounts payable	$ 131	$ 147